Published May 2003 | Version v1
Journal article Metadata-only

2D ferromagnetic fluctuation above TN in orbital-ordered LaMnO3

Creators

Description

Onset of two-dimensional (2D) ferromagnetic (FM) short-range order with T2D≅150 K above A-type antiferromagnetic (AF) Neel temperature TN=139 K was observed in 100 G low field for orbital-ordered LaMnO3. The A-type AF long-range order is stabilized through strong 2D basal plane FM superexchange coupling of orbital-ordered eg electrons and weak c-axis AF coupling. Both T2D and TN are field dependent, and merge in 1 T high field around 130 K. Mn K-edge X-ray absorption near-edge spectrum for orbital-ordered LaMnO3 at room temperature indicates a pre-edge splitting of 2.0 eV due to weakly allowed 1s-3d dipole transition

Additional details

Identifiers

DOI
10.1016/S0921-4526(02)02596-6;
arXiv
arXiv:math/0411079v3;
PII
S0921452602025966;

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
329-333
Journal Issue
1-2
Journal Page Range
p. 829-830
ISSN
0921-4526
CODEN
PHYBE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36094366
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ABSORPTION SPECTRA; ANTIFERROMAGNETISM; COUPLING; DIPOLES; ELECTRONS; EV RANGE; FERROMAGNETISM; FLUCTUATIONS; LANTHANUM COMPOUNDS; MANGANATES; NEEL TEMPERATURE; PHASE TRANSFORMATIONS; TEMPERATURE DEPENDENCE; TWO-DIMENSIONAL CALCULATIONS; X-RAY SPECTRA
Descriptors DEC
ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; LEPTONS; MAGNETISM; MANGANESE COMPOUNDS; MULTIPOLES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SPECTRA; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE; VARIATIONS

Optional Information

Copyright
Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.